Surgery – Means for introducing or removing material from body for... – With means for cutting – scarifying – or vibrating tissue
Patent
1992-01-24
1994-09-06
Thaler, Michael H.
Surgery
Means for introducing or removing material from body for...
With means for cutting, scarifying, or vibrating tissue
606159, 606169, A61B 1722
Patent
active
053443950
ABSTRACT:
An apparatus and method for recanalization of a blood vessel obstruction by application of low frequency mechanical energy to a vessel site or by creation of cavitation at the vessel site. The system includes a catheter assembly having a wire located within and extending through a wire support tube and adapted to move axially therewith. A driving apparatus positioned at a proximal portion of the catheter assembly imparts energy to the wire to oscillate it axially. A tip is connected to a distal end of the wire and imparts low frequency mechanical energy or causes cavitation at the vessel site to recanalize it. Further, a fluid particle removal system can be incorporated within the catheter assembly to convey pressurized fluid via the wire support tube to the tip where the fluid is redirected in a proximal direction into a second tube of the catheter assembly coaxially positioned around the wire support tube. Particulate from the vessel obstruction being recanalized becomes attached viscously in the redirected pressurized fluid and is withdrawn from the vessel site.
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Whalen Mark J.
Willard Lloyd K.
Sci-Med Life Systems, Inc.
Thaler Michael H.
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